simply remove the broken darwin implementation

README.md

@@ -2,8 +2,8 @@
 
 Pty is a Go package for using unix pseudo-terminals.
 
-(Note, the Darwin implementation doesn't work. If you
-are interested in fixing it, I'd appreciate a patch!)
+(Note, there is only a Linux implementation. I'd appreciate a patch
+for other systems!)
 
 ## Install
 

pty_darwin.go

@@ -1,88 +0,0 @@
-package pty
-
-import (
-	"os"
-	"syscall"
-	"unsafe"
-)
-
-const (
-	sys_TIOCGPTN   = 0x80045430
-	sys_TIOCSPTLCK = 0x40045431
-)
-
-
-// Opens a pty and its corresponding tty.
-func Open() (pty, tty *os.File, err os.Error) {
-	p, err := os.OpenFile("/dev/ptmx", os.O_RDWR, 0)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	sname, err := ptsname(p)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	err = grantpt(p)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	t, err := os.OpenFile(sname, os.O_RDWR, 0)
-	if err != nil {
-		return nil, nil, err
-	}
-	return p, t, nil
-}
-
-const (
-	ptdev1 = "pqrsPQRS"
-	ptdev2 = "0123456789abcdefghijklmnopqrstuv"
-)
-
-func ptsname(f *os.File) (string, os.Error) {
-	fi, err := f.Stat()
-	if err != nil {
-		return "", err
-	}
-	return "/dev/tty" + string([]byte{
-		ptdev1[minor(fi.Rdev)/32],
-		ptdev2[minor(fi.Rdev)%32],
-	}),nil
-}
-
-
-func grantpt(f *os.File) os.Error {
-	p, err := os.StartProcess("/bin/ptchown", []string{"/bin/ptchown"}, &os.ProcAttr{Files: []*os.File{f}})
-	if err != nil {
-		return err
-	}
-	w, err := p.Wait(0)
-	if err != nil {
-		return err
-	}
-	if w.Exited() && w.ExitStatus() == 0 {
-		return nil
-	}
-	return os.EACCES
-}
-
-
-func ioctl(fd int, cmd uint, data *int) os.Error {
-	_, _, e := syscall.Syscall(
-		syscall.SYS_IOCTL,
-		uintptr(fd),
-		uintptr(cmd),
-		uintptr(unsafe.Pointer(data)),
-	)
-	if e != 0 {
-		return os.ENOTTY
-	}
-	return nil
-}
-
-
-func minor(d uint64) int {
-	return int(d & 0xffffffff)
-}